Mid-West Model 146 Diaphragm Type Differential Pressure OEM Indicator, 5 – 30 PSID

ABLE Instruments are Mid-West Instrument’s Official Representative for Sales and Service in the UK and Ireland, including the Model 146 Diaphragm Type Differential Pressure OEM Indicator (0-5 to 0-30 PSID or equivalent). The Model 146 from Mid-West Instrument stands out as the most affordable OEM diaphragm-type indicator, designed for precise differential pressure measurement. With a full-scale accuracy of ±5% and a differential pressure range of 0-5 PSID to 0-30 PSID, it ensures reliable performance in various applications. This model is equipped with Plug-In DIN and Flying Lead electrical switch options, enhancing its versatility while maintaining a lower price point.

Model 146 features a rugged diaphragm-type sensing element, providing durability and consistent performance. The device is weather-resistant (with the DIN connector option) and corrosion-resistant, making it suitable for demanding environments. Its shatter-resistant lens further adds to its robustness. The over-range protection feature safeguards the gauge against high-over-low and low-over-high pressure conditions, ensuring reliable operation. The Model 146 is backed by a one-year warranty, reflecting the manufacturer’s confidence in its quality.

The gauge is available in a compact oval dial size with single or dual-side configurations measuring 1-1/4” x 2-1/4”. It offers a differential full-scale ascending accuracy of ±5%, in line with ASME B40.1 Grade D standards. The Model 146 can withstand working pressures up to 1000 PSIG (69 Bar) and operates effectively in temperatures ranging from -40°F to +200°F (-40°C to +93°C). Constructed with high-quality materials, including an aluminium or 316 stainless steel body and 316 stainless steel pistons with ceramic magnets for internal wetted parts, this model ensures high durability and performance.

Features:

• Competitive pricing
• Durable piston type design for the sensing element
• Weather and corrosion resistant (electrical with DIN connector) construction
• Shatter resistant lens
• Over range protection, High over Low and Low over High

Have a particular application / project in mind? We’d welcome a call on +44 (0) 1189 169 420, or email us now at [email protected]

It is available with 1/8” FNPT bottom or back connections and supports various elastomers for O-rings, such as Buna-N, Viton, silicone, Neoprene (for 25 PSID and below), and ethylene propylene. Common applications for the Model 146 include filter and strainer monitoring, water system applications, refrigerant filtration systems, compressed air systems, hydraulic systems, and heat exchanger pressure drop monitoring.

What are the electrical switch specifications? The Mid-West Instrument Model 146 Plug-In DIN and Flying Lead switches are available in a non-adjustable configuration. Mid-West will pre-set switch set point(s) according to customer specifications.

Optional features include:

• Hermetically sealed switch outputs: 3 amps in SPST and 0.25 amps in SPDT configuration.
• Available with Flying Leads or a DIN IP65 / NEMA 4X Plug-in Connector.
• SPDT 3W, 0.25 Amp, 125 VAC/VDC
• SPST 60W, 3.0 Amp, 240 VAC/VDC
• DIN Compression Plug seals on Cable OD, with matching Plug to Cable OD.

CE Marking for compliance with Low Voltage and RoHS Directives is available upon request.

Model 146 Specifications: